Broady looks strong with her first serve, slamming it past Gavrilova's reach. A miscued backhand hands Gavrilova a point and there's a yell of "come on!" from the Australian.

Gavrilova's ticking now, raising her fist to the crowd as a forehand volley goes her way, before Broady mistimes another backhand to hand Gavrilova the point.

Gavrilova takes a long moment to settle herself, bouncing the ball before slamming a serve that Broady slashes into the net. Gavrilova looks on top before Broady comes up to the net again and pats the ball beyond Gavrilova.

Gavrilova recovers and and backhand volley means she'll hold her serve.

Jill Craybas
Former world number 39 on BBC Radio 5 live sports extra

Broady has been in control during the first set. She has taken it to her opponent.

Broady, serving for the set, comes up to the net and Gavrilova gets her backhand all wrong. There's a grunt of frustration and a glance up to her support box. 

It's not going her way at all as she whacks a forehand wide, before Broady unleashes. She stays back before advancing up to the net and just powering the ball beyond Gavrilova's reach. First set to Broady.

That's ridiculously good from Naomi Broady.

Gavrilova looks strong on her serve and leads to 30-0, but Broady battles back as Gavrilova first miscues a forehand before she double faults. A poor backhand gives Broady the advantage.

David Law
Radio 5 live sports extra commentator

Broady's in the Australian Open main draw for the first time and she's going to make the absolute most of this. She will be satisfied with the way this has started.

Cheers, Osbo.

A fist pump from Naomi Broady as she slams a forehand past Gavrilova. The Australian then gets her return all wrong and Broady takes the point with a casual dink over the net.

A straightforward hold in reply for world number 26 Gavrilova as we continue on serve.

Here's Amy Lofthouse to take you through the British number three's progress.

We turn our attention to Naomi Broady now, who is looking to become the sixth Briton to reach the second round.

She's just held to go 3-2 up against Australian 22nd seed Daria Gavrilova.

Fist clenched. High in the air. Double jump.

This celebration from Novak gets eight out of 10 from me.

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Feeling tired?

Spare a thought for Ivo Karlovic and Horacio Zeballos, who are still slugging it out in the fifth set.

It's going to serve with Karlovic 19-18 up. They're closing in on five hours on court 19.

Image source, EPA

Jim Courier asks Novak about his two-year-old son Stefan and the strain of being away from him.

"Like any child my boy is very curious and demanding. I miss him.

"His favourite thing is his daddy."

Aww, Djokovic being a cutie-patootie.

Defending champion Novak Djokovic has been speaking on-court to Jim Courier.

"It feels like home. Like coming back to the place where I've had so many beautiful memories. Every time I land in Melbourne I get to relive those memories.

"Thank you all very much for coming out tonight.

"Of course when I saw the draw I thought it was the only match I would focus on. I could have finished off early in the tournament if he was on.

"I managed to start well with a great intensity,"

Leon Smith
Great Britain Davis Cup captain on Radio 5 live sports extra

At the end of the day it's not been physically demanding at all for Novak Djokovic, so it's not taken much out of him. We saw very few extended rallies.

Novak throws his arms towards each corner of the Rod Laver Stadium. Here he comes for a chat...

Russell Fuller
BBC tennis correspondent on Radio 5 live sports extra

What an extraordinary, bizarre match. Fernando Verdasco has had a shocker but he's still managed to trouble Novak Djokovic.

Verdasco, serving to stay alive, swings a forehand long for a rocky start.

But Djokovic pops up a high lob attempt that the Spaniard waits an eternity to drop before dispatching it after a bounce.

The crowd get their hands clapping for a tasty rally, which sees Verdasco benefit from a net cord for 40-30.

But Djokovic will just not go away as he forces Fernando into finding the net.

Long from Fernando - match point

Djokovic just picks up where he left off though and races into a 40-0 lead. Verdasco is getting desperate as he makes a third failed challenge in two games.

A wild forehand from the lefty Spaniard goes long and Djokovic is a game away from the second round.

Verdasco needed this. Absolute grit.

He serves his way out of trouble at deuce and lets out a cry of "vamos!".